What is the best solder for copper pipes?
The Best Solder Is Safe Solder
The new lead-free 95/5 solder, 95% tin 5% antimony, has a lower viscosity than 50/50. That means it flows more quickly when molten. It flows so quickly that it can flow right through the joint while it is being applied leaving a gap at the top of the joint. via
What kind of solder should be used on water pipes?
Acid core solders are most often used in plumbing applications to join metal pipes or sheet metal. Rosin core solder is also fabricated with a hollow core inside the solder wire, but the flux used is a milder variety made of rosin, which is a solid form of resin derived from conifers such as pine. via
Do you need flux to solder copper pipe?
Strong metals such as brass and copper will require a synthetic acid flux in order to be soldered. This will remove not only oxidation but also corrosion and other residues that build up on these metals. via
What do I need to solder a copper pipe?
The torch needed for soldering copper can be propane or MAPP gas (methylacetylene-propadiene propane). MAPP gas comes in a yellow tank and propane comes in a blue tank. MAPP gas, usually a bit more expensive, gets much hotter than propane, so heats the pipe faster. via
Can you use too much solder on copper pipe?
Use the proper amount of solder
Don't feed too much solder into the joint. It's tempting to melt a few inches of solder into a joint as extra insurance against leaking. But excess solder can puddle inside pipes, restricting water flow, and can form small balls that break loose and damage faucet valves. via
Why does my solder not stick to copper pipe?
The copper must be bright and shiny. Old pipes oxidize on the surface and turn dark- they won't take solder even with flux. Also be careful heating the pipe too long with a torch. It will change the pipe and soften the copper. via
Can you Unsweat a copper pipe?
Sweat or unsweat copper pipe joints with a hand-held torch. Plumbers join copper pipe with a torch and soldering paste in a process called sweating pipe. The plumber applies the solder to the juncture of the pipe and fitting, making it watertight and permanent. This process is known as unsweating pipe. via
How do I connect copper pipe without soldering? (video)
Is electrical solder the same as plumbing solder?
Perhaps the key difference between electrical and plumbing solder is the type of flux used in each application. Typically, electrical solder contains rosin core flux; plumbing solder uses an acid-based flux. via
How long can you leave flux on copper?
Generally the rule is don't paste them if you're not going to solder that day. Overnight is probably fine, but after a few days the joints might need to be taken apart and re-fluxed if it's started to oxidize too much, the solder won't take. The pipe will be fine. The joints can't oxidize if they're covered in flux. via
Does flux damage copper pipe?
The flux will corrode the pipe at the joint and some will be pushed around the system to find other things to corrode, maybe inside your boiler. The bottom line is that misuse of flux is commonplace and causes problems large and small. via
What is the best flux for copper?
You may find two or three kinds of flux on the shelf. We recommend tinning flux. It contains a bit of powdered metal alloy that is similar to solder. The alloy melts and coats the inside of the joint and helps ensure a solder joint that's completely filled and leakproof. via
When did they stop using copper pipes in houses?
Copper was the plumbing pipe of choice from the 1950s until 2000 and was widely used both in new construction and to replace the galvanized steel water supply pipes that had been the standard into the 1950s. But copper's use has gradually faded, due to the introduction of. via
Is it easy to solder copper pipe?
Soldering copper water supply lines is not a difficult skill. Even a rookie can learn to solder leak-proof joints in 30 minutes. The process is simple—if you follow a few basic guidelines. via
How long do you wait after soldering copper pipe?
The only good way to test is to put pressure on the joint (turn on the water to the house). Be sure to wait until the solder has cooled (2-3 minutes) before pressurizing the line to avoid the solder cracking due to a quick change in temperature. via